Visual Builder or Code?

Trade-offs

A visual builder is quick to start, easy to review with product and operations people, and hosted for you, with previews, traces and versions built in. Code (for example the Agents SDK) gives full control: your own tools and databases, custom logic, tests in CI, any deployment target, and code review. Many teams prototype on the canvas and move to code (or export) when they need custom integrations, complex logic, strict testing or self-hosting. Choose by: who will maintain the flow, how much custom logic and integration it needs, data residency and security rules, and how you will test and roll it out.

A decision table

A starting guide, not a rule.

need                                              lean towards
fast prototype, mostly prompts + hosted tools       visual builder
non-developers reviewing and editing the flow      visual builder
custom tools hitting internal systems              code (or MCP servers + builder)
complex branching, retries, unit tests in CI       code
self-hosting or strict data controls               code
embed a chat UI quickly                            builder workflow + embeddable chat UI

Plan the exit early

If you might move to code later, keep tool logic behind APIs or MCP servers so the same tools work in both worlds.

Quick check: When does code usually beat a visual builder?

• When you need custom integrations, complex logic, CI tests or self-hosting
• For a five-minute prototype
• When non-developers must edit the flow
• When you have no logic at all